Electric push-button.



No. 793,986. PATENTED JULY 41:, 1905.. H. F. KEIL.

ELECTRIC PUSH BUTTON B m u u h mm n/ ll m. N We on W K MN H W .L/ g 7. PM

APPLICATION FILED FEE.Z7,1906.

4 F WA/ m w m I E w Il ll'o, T933536.

Patented J'uly 4t, 1905.

HENRY FRANCIS KEIL, OF BRONXVILLE, NEYV YORK.

SPECIFICATION forming part of Letters Patent No. 793,936, dated July 4, 1905. Application filed February 27, 1905. Serial Nu, 247,565.

lb (till/17mm, it may concern/.-

Be it known that l, HENRY FRANCIS KnIL, a citizen of the United States of America, and a resident of Bronxvillain the county of Viestchester and State of New York, have invented a certain new and useful Electric Push Button, of which the following is a specilication, the same being a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to makeand use the same.

This invention relates to deviees-such as manually-actuated disks, knobs, or ballsby pushing or pressing which the circuit of an electric bell is completed, and particularly to a push-button in which the circuit-wires are directly inserted and firmly held in an insulated condition and in position to be engaged with the circuit-changing means at will with out the use of binding-posts, screws, &c.; and it has for its object the production of an improved. structure of this class made of simplified construction, ornamental in appearance, and efficient in practical use.

l i ith this object in view the invention consists in certain novel features of construction and combination and arrangement of parts, all of which will be hereinafter described, and specifically pointed out in the drawings which accompany and form a part of this specification, and in which Figure 1 represents a view in section of a push-button made according to my invention. Fig. 2 is a detail sectional view of the same; if 3, a view in section of the circuit-closer and cup; Fig. 4, a view in section of the plug or body member, and Fig. 5 a view of the upper face of the latter.

Trike letters of reference indicate like parts in all the views.

Referring iarticularly to the drawings, in which is shown one embodiment of my invention, r-ldenotes the cup or cylinder, preferably having a rim A. The cup is formed with plug-retaining means, as an interior-lyextending shouldered portion or indentation a, and is also preferaljily made with an additional interiorly-extending shouldered portion or indentation, as at a, or equivalent interioily-extending parts constructed and arranged to constitute a retaining-rim or otherwise slightly contracted in size a short distance above the first-named interiorlyextending part in order to hold the cup and plug together when the cup is snapped upon the plug.

The circuit-closing means ordinarily consist of a washer .l-l, constructed of insulating material, through an opening or slot in which are passed two circuit-closing lingers B lu which are rigidly engaged with the knob or pushbutton or center U. A spring 7) is placed around the shanks of the lingers B and l3 and is located intermediate the washer l) and the button 0 and serves to normally hold the button 0 and the spring-lingers B and B in their highest and normal position, the upward movement of the same being limited by the said washer B.

The plug or body member 1) is preferably made of insulating material, as of hard rubher, and is ordinarily formed with a plurality of longitudinal orifices (Z, extending through the same and terminating ordinarily at the upper face of the plug in a practically horizontal part or parts, as the widened portions or interior laterally-disposed recesses (Z, the bottom edge of the plug being ordinarily widened and formed with a milled edge D. The said plug 1) also has formed in the side of the same a recess or inwardly-extending portion d constructed and arranged to coact with the indentation a in holding the plug within the cup A. In order to allow of more freedom of movement of the cup A and to give the same more resilience, l sometimes cut or split one or both of the sides of the indentation a in order to form a slit'a on one or both sides of the said indentation, as shown in Fig. l. in operation the circuit-wires E E are thrust through the orifices (Z of the plug D and bent over the practically horizontal face formed by the interiorly-disposcd recesses or grooves (Z' and secured in an immovable relation to the said plug by bending the ends of the wires over so as to lie in a horizontal position or in any other approved manner. The circuit-closing device, consisting of the button (J and washer B, is now snapped into the said cup by the operation of forcing the.

washer over the contracted portion a of the and described, but that such changes and equivalents may be substituted therefor.

hat I claim as my invention is- 1. In an electric push-button, a plug having longitudinal perforations for wires located away from the edge thereof and terminating in a practically horizontal face formed by an interior lateral-recessed part across which the ends of the wires may be placed.

2. In an electric push-button, a plug having longitudinal perforations for wires and also having cup-retaining means consisting of a recessed or inwardlyeXtending portion, in combination with a cup having circuit-closing means and formed with retaining means consisting of an interior shouldered part to engage the plug-retaining means and whereby the cup may be snapped on or off the said plug.

3. In an electric push-button, a cup having retaining means consisting of an interior part constructed and arranged to form a shoulder, in combination with a plug constructed and arranged to be snapped into the said cup and having longitudinal perforations for wires.

4. In an electric pushbutton,-a plug having longitudinal perforations for wires located away from the edge thereof, and terminating in a practically horizontal face formed by an interior lateral-recessed part across which the ends of the wires may be placed, the said plug also having retaining means consisting of recesses or inwardly-extending portions.

In testimony of the foregoing specification I do hereby sign the same, in the city of New York, county and State of New York, this lath day of February, 1905.

HENRY FRANCIS KEIL.

IVitnesses:

F. A. WURzBAcI-i, H. BAMMANN. 

